Base for playground structure



FIG. 1 is a top left front perspective view of a base for playgroundstructure showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; the rear elevational viewbeing a mirror image;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a base for playground structure, as shown anddescribed.